x86/fpu: Rename sanitize_i387_state() to fpstate_sanitize_xstate()
authorIngo Molnar <mingo@kernel.org>
Tue, 28 Apr 2015 09:11:10 +0000 (11:11 +0200)
committerIngo Molnar <mingo@kernel.org>
Tue, 19 May 2015 13:48:00 +0000 (15:48 +0200)
commitd0903193124132c6bb59a895eeb0656f86013da1
treee9f59e3c3207ecbcda884c225560fab90da778e2
parentbefc61ad3c097bb6ace3da0c73ad56272ccee02d
x86/fpu: Rename sanitize_i387_state() to fpstate_sanitize_xstate()

So the sanitize_i387_state() function has the following purpose:
on CPUs that support optimized xstate saving instructions, an
FPU fpstate might end up having partially uninitialized data.

This function initializes that data.

Note that the function name is a misnomer and confusing on two levels,
not only is it not i387 specific at all, but it is the exact opposite:
it only matters on xstate CPUs.

So rename sanitize_i387_state() and __sanitize_i387_state() to
fpstate_sanitize_xstate() and __fpstate_sanitize_xstate(),
to clearly express the purpose and usage of the function.

We'll further clean up this function in the next patch.

Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/include/asm/fpu/internal.h
arch/x86/kernel/fpu/core.c
arch/x86/kernel/fpu/xstate.c